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5430-856 - Actuator Driver Board is available in stock which ships the same day.
5430-856 - Actuator Driver Board comes in UNUSED as well as REBUILT condition.
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TECHNICAL SPECIFICATIONS
Part Number: 5430-856
Manufacturer: Woodward
Product Type: Actuator Driver Board
Functional Group: High-Current Driver Output Module
Series: Woodward MicroNet / NetCon Series
Application: Proportional Actuator & Valve Positioner Control
Output Channels: Dual High-Current Driver Channels
Output Current Range: 0–200 mA / Dither-Modulated Proportional Outputs
Control Backplane: MicroNet VMEbus Architecture
Isolation: Optical & Galvanic Channel-to-Bus Isolation
Form Factor: Standard VME Rack-Mount Card
Conformal Coating: Yes
System Compatibility: Woodward MicroNet & MicroNet Plus Racks
Availability: In Stock
Repair Lead Time: 3–7 Days
Country of Origin: United States
Manual Reference: Woodward MicroNet System Manual
The Woodward 5430-856 is an Actuator Driver Board designed for Woodward MicroNet and MicroNet Plus turbomachinery control platforms. Sliding into standard VME slots, the board converts digital position commands from the main CPU into precise, high-current proportional driver outputs to operate electro-hydraulic valves, fuel metering positioners, and steam turbine actuators.
CLOSED-LOOP PROPORTIONAL CURRENT CONTROL:
The High-Current Driver Output Module functions as a closed-loop current regulator, continuously adjusting the current supplied to actuator coils based on CPU command setpoints. Superimposed dither current reduces mechanical friction and hysteresis in field actuators, ensuring smooth valve response during subtle load adjustments.
CURRENT MONITORING & INDUCTIVE FLYBACK PROTECTION:
To safeguard system logic against high inductive energy spikes generated during fast valve closures or trips, the High-Current Driver Output Module features onboard flyback suppression networks. Continuous current sensing logic verifies loop continuity, triggering rapid fault status telemetry across the VME backplane in the event of an open coil circuit, ground fault, or driver thermal overload.
WHY BUY FROM WOC
World of Controls keeps an extensive inventory of genuine OEM replacement components for GE Speedtronic, EX2100, and Woodward control systems. The Woodward 5430-856 Actuator Driver Board is available in UNUSED surplus and fully REBUILT conditions, covered by comprehensive warranty protection. Every unit undergoes rigorous inspection and bench-testing by experienced technical personnel to verify output current accuracy, dither modulation, and backplane bus communication prior to dispatch. We also offer fast repair and exchange options to support power generation facilities in preventing downtime. Contact our sales team today to check live stock, request a quote, or arrange quick worldwide shipping.
What is Woodward 5430-856?
The Woodward 5430-856 is an actuator driver board designed for MicroNet and MicroNet Plus control systems. It provides controlled current outputs for proportional electro-hydraulic actuators and valve positioners. The board receives control commands from the system and converts them into regulated actuator drive signals.
How does the actuator driver board monitor actuator output?
The board monitors actuator current to help verify that the connected load is responding within the expected electrical range. Abnormal conditions such as an open actuator circuit or driver fault can be detected and reported through the control system.
How does the actuator driver board control a proportional actuator?
The 5430-856 regulates the output current supplied to the actuator coil according to the command received from the control system. This allows the actuator to respond proportionally to changes in the commanded position. The driver can also support dither-modulated output to improve actuator movement where required.
What type of outputs are provided by the 5430-856?
The actuator driver board provides dual high-current driver channels for proportional actuator applications. The output channels are intended to supply controlled current to compatible actuator coils and valve-positioning devices. Actual operating limits should be verified against the applicable Woodward system documentation and hardware configuration.
What is the purpose of dither current in the 5430-856?
Dither current introduces a controlled variation around the actuator command to help reduce static friction and hysteresis in certain electro-hydraulic actuators. This can improve actuator movement at small command changes and support smoother positioning during normal control operation.
Why is the actuator output current lower than the commanded value?
A low output current can result from an incorrect configuration, excessive resistance in the actuator circuit, loose or damaged wiring, an actuator coil problem, or a fault within the driver channel. Compare the measured current with the commanded value and inspect the complete actuator circuit before replacing the board.
